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Aleksandr-060686 [28]
3 years ago
5

Solve x^2 + 6x + 4=0?

Mathematics
1 answer:
kati45 [8]3 years ago
4 0
You need to use the quadratic formula for this question.
\frac{-b+- \sqrt{b^2-4ac} }{2a}
In your equation, a is 1, b is 6, and c is 4. (I couldn't find a plus minus sign, so that's what the +- means, sorry if there's confusion.)
Sub those into the quadratic formula, and 
\frac{-6+- \sqrt{(6)^2-4(1)(4)} }{2(1)}
For the first answer, we should get 
x1=-0.7639, when you add the √6^2-4(1)(4)
For the second answer, we get
x2=-5.2361 when we subtract the √6^2-4(1)(4)
Therefore, the x values that make this equation equal to 0 should be approximately -0.7639 and -5.2361.
The more specific answers are
x1= -3+√5 and x2=-3-√5.

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Given the diagram below, what is the length of segment EF?
grigory [225]

Answer:

D) 5

Step-by-step explanation:

This is the median of the trapezoid.  It is the line segment that connects the midpoints of the non-parallel sides of the trapezoid.

The length of the median of a trapezoid is equal to 1/2 the sum of the bases; this makes ours

1/2(3.3+6.7) = 1/2(10) = 5

8 0
3 years ago
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If P(x,y) is the point on the unit circle defined by real number e, then csce =
olasank [31]

Answer:

csc(e) = \frac{1}{y}

Step-by-step explanation:

It is given that the point P(x, y) lies on the unit circle and is defined by real number e. We have to find csc(e) i.e cosecant of (e)

This scenario is represented in the figure attached below.

The formula of csc is:

csc(\theta) = \frac{\text{Hypotenuse}}{\text{Opposite}}

A right angled triangle is constructed, as shown in figure. The hypotenuse of the triangle forms the radius of the circle. Since, the circle is a unit circle the length of hypotenuse would be equal to 1.

Hypotenuse = 1

So, the formula of csc would be reduced to:

csc(e) = \frac{1}{\text{Opposite}}

The side opposite to the angle made at origin is y. So,

csc(e) = \frac{1}{y}

6 0
2 years ago
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K12 help??? 3.12 Congruence and Rigid Motions
Kryger [21]
Congruent because you can map the triangles using a reflection across the y-axis which is a rigid motion
7 0
3 years ago
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The students in math class use square tiles to make arrays. Celia says they can make more arrays with 8 tiles than with 9 tiles
Cerrena [4.2K]

The students in math class use square tiles to make arrays. If they

  • use 8 (8=1·2·2·2) tiles, then they can form arrays of the length in 1 tile, 2 tiles, 4 tiles and 8 tiles;
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So, you can conclude that Celia is correct.

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3 years ago
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The equation x 2y = 16 is in standard form. what is the slope of the line? â€""2 â€""1 â€""0.5 0.5
Savatey [412]

By rewriting the given line, we can see that the slope is equal to -1/2 or -0.5

<h3>How to get the slope of the given line?</h3>

Remember that a line is:

y = a*x + b

Where a is the slope and b is the y-intercept of the line, which is the point where the line intersects the y-axis.

Then, we can rewrite our equation:

x + 2y = 16

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2y = 16 - x

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Comparing with the general line equation, we can see that the slope is -1/2.

If you want to learn more about linaer equations:

brainly.com/question/1884491

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